We will not able to provide whois privacy protection for .us extension for the following reason:

.US has made a dramatic change in their policy saying (in part):

"The United States Department of Commerce's National Telecommunications
and Information Administration ("NTIA") has recently completed its
review of "proxy" or anonymous domain registration services by .us
Accredited Registrars. At the conclusion of this review, NTIA directed
NeuStar to phase out the offering of such services by Registrars or by
any of its partners or resellers and to ensure that complete and
accurate WHOIS data is provided for any existing registrations in .us."